1 files changed, 39 insertions, 0 deletions
diff --git a/third_party/rust/fallible_collections/src/try_clone.rs b/third_party/rust/fallible_collections/src/try_clone.rs
new file mode 100644
index 0000000000..a8ff0442b4
--- /dev/null
+++ b/third_party/rust/fallible_collections/src/try_clone.rs
@@ -0,0 +1,39 @@
+//! this module implements try clone for primitive rust types
+
+use super::TryClone;
+use crate::TryReserveError;
+
+macro_rules! impl_try_clone {
+    ($($e: ty),*) => {
+        $(impl TryClone for $e {
+            #[inline(always)]
+            fn try_clone(&self) -> Result<Self, TryReserveError>
+            where
+                Self: core::marker::Sized,
+            {
+                Ok(*self)
+            }
+        }
+        )*
+    }
+}
+
+impl_try_clone!(u8, u16, u32, u64, i8, i16, i32, i64, usize, isize, bool);
+
+impl<T: TryClone> TryClone for Option<T> {
+    #[inline]
+    fn try_clone(&self) -> Result<Self, TryReserveError> {
+        Ok(match self {
+            Some(t) => Some(t.try_clone()?),
+            None => None,
+        })
+    }
+}
+// impl<T: Copy> TryClone for T {
+//     fn try_clone(&self) -> Result<Self, TryReserveError>
+//     where
+//         Self: core::marker::Sized,
+//     {
+//         Ok(*self)
+//     }
+// }